Re: Was it meant to come last in so many tests ? ;-). The X2 3800+ looks the better overall processor to me and that's just 32-bit !
It scores within 5% of the 2.0GHz Athlon X2 3800+ in 16/22 tests. Anything within this range is noise and could change with a new test run. The X2 may have a small advantage overall in performance, but it will be highly unnoticeable to end-users. For all intents and purposes, Yonah can meet the performance of an equivalently clocked X2, which means as far as mobile goes, AMD will be no competition until 65nm, since there's no way they can outclock Yonah before that.
And unless you can show that 64-bit apps will be available in 2006, or that they will even offer a performance/watt improvement, the subject is effectively moot.
Re: The good think about K8 is that it has the strengths of the P4 and P-M combined without any of the weaknesses
It's higher power than Pentium M, meaning it won't be as suitable for mobile.